Concept explainers
(a)
An equation that expresses the relationship between the number of phone calls C between two cities, if the calls varies jointly as the product of the city population and in the inverse direction as the square of the distance d among the cities.
(b)
To calculate: The value of the proportionality constant
(c)
To calculate: The average number of daily phone calls between Memphis and New Orleans. If the distance between the two cities is 400 miles and the number of phone calls between two cities C and the calls varies jointly as the product of the cities population and in the inverse direction as the square of the distance d among the cities.
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Blitzer: Precalculus Essentials_5 (5th Edition)
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